<form action="{#:U('do_send_message')#}" method="post">
    <table class="table dialog">

        <tr>
            <td class="title"><lang name="send_message"></lang></td>
        <td><textarea rows="10" name="content" class="span4 {#:col('12 12 12 12')#}" server-validator="$do_send_message" placeholder="输入消息"></textarea></td>
        </tr>
        <input type="hidden" value="{#$groupid#}" name="groupid"/>
    </table>
</form>